/*

Miranda IM: the free IM client for Microsoft* Windows*

Copyright 2000-2007 Miranda ICQ/IM project, 
all portions of this codebase are copyrighted to the people 
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or ( at your option ) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
aLONG with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
#include "commonheaders.h"

/**
 * name:	IsUSASCII
 * desc:	determine whether the pBuffer string is ascii or not
 * param:	pBuffer	- string to check
 *
 * return	TRUE or FALSE
 **/
BOOLEAN IsUSASCII( LPCSTR pBuffer, LPDWORD pcbBuffer ) 
{
	BYTE c;
	PBYTE s = ( PBYTE )pBuffer;
	BOOLEAN bIsUTF = 0;

	if( s == NULL ) return 1;
	while( ( c = *s++ ) != 0 ) {
		if( c < 0x80 ) continue;
		if( !pcbBuffer ) return 0;
		bIsUTF = 1;
	}
	if( pcbBuffer ) *pcbBuffer = s - ( PBYTE )pBuffer;
	return !bIsUTF;
}
